Some .NET Regular Expressions for HTML parsing

Despite the observations in my previous post, my intranet publishing solution is based on a combination of the ASP.NET approach to obtain web content and regular expressions coded in C#. Here are some regular expressions that worked well for me to get specific meta and input tags regardless of letter case and attribute quoting style (single, double or no quotes):

• Content attribute of meta tag with name content-type:
  (?insx)
<meta\s([^>]*?\s*)?
  content\s*=\s*
  ( '(?<Result>[^']*)'
  | "(?<Result>[^"]*)"
  | (?<Result>[^\s>]*)
  )
  [^>]*>
(?<=\sname\s*=\s*['"]?content-type['"]?[^>]*>)



• Value of input element with name input-name:
  (?insx)
<input\s([^>]*?\s*)?
  value\s*=\s*
  ( '(?<Result>[^']*)'
  | "(?<Result>[^"]*)"
  | (?<Result>[^\s>]*)
  )
  [^>]*>
(?<=\sname\s*=\s*['"]?input-name['"]?[^>]*>)